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Nephrite
Nephrite

Pollucite
Pollucite



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Nephrite
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Pollucite

Nephrite and Pollucite Optical Properties

Optical Properties

Luster

Vitreous, Greasy
Vitreous, Greasy

Pleochroism

None
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Translucent
Transparent, Translucent

Refractive Index

1.600-1.6271.517-1.525
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Isometric

Birefringence

0.027-9999
0 0.296
👆🏻

Clarity

Translucent
Transparent

Nephrite and Pollucite Optic Character

Nephrite and Pollucite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Nephrite and Pollucite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Nephrite and Pollucite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Nephrite and Pollucite Transparency

Similar to their colors, Nephrite and Pollucite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Nephrite is Translucent while Nephrite is Translucent in appearance.